Patent FR716902A successfully refreshed from Google Patents.
Patent US3200799A successfully refreshed from Google Patents.
US3200799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: MacLane Manufacturing Co Ltd
•
Filing: 1962-03-14
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Granted: 1965-08-17
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Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Hammick Frederick Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:29
CPC Classifications
F; F02; F02B; F02B25/00; F02B25/14; F02B41/00; F02B41/02; F02B41/06; F02D; F02D13/00; F02D13/02; F02D13/0203; F02D13/0215; F02D13/0269; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A FOUR STROKE INTERNAL COMBUSTION ENGINE CHARACTERISED BY A PAIR OF ADJACENT CYLINDERS IN LINE, AN INLET VALVE IN ONE CYLINDER, AN EXHAUST VALVE IN THE OTHER CYLINDER, AN INTERFLOW DUCT BETWEEN THE CYLINDERS, AN INSOLAING VALVE BETWEEN THE CYLINDERS OPERABLE TO OPEN OR CLOSE THE INTERFLOW DUCT, PISTONS RECIPROCABLE IN THE CYLINDERS, THE PISTONS BEING IN PHASE OR NEARLY IN PHASE WITH EACH OTHER AND CAMS ON A DRIVEN CAM SHAFT CONTROLLING VALVE TIMING WHEREBY THE EXHAUST VALVE OPENS BEFORE BOTTOM DEAD CENTER OF THE POWER STROKE AND REMAINS OPEN UNTIL PART OF THE COMPRESSION STROKE HAS BEEN COMPLETED, THE ISOLATING VALVE OPENS AT A POINT CLOSE TO WHERE THE EXHAUST VALVE CLOSES AND CLOSES AT OR NEAR THE END OF THE EXHAUST STROKE, AND THE INLET VALVE OPENS AS OR SHORTLY AFTER THE ISOLATING VALVE CLOSES AND CLOSES EARLY IN THE COMPRESSION STROKE.
Claim 2
Dependent Claim
145 words
A FOUR STROKE INTERNAL COMBUSTION ENGINE CHARACTERISED BY A PAIR OF ADJACENT CYLINDERS IN LINE, AN INLET VALVE IN ONE CYLINDER, AN EXHAUST VALVE IN THE OTHER CYLINDER, AN INTERFLOW DUCT BETWEEN THE CYLINDERS, AN INSOLAING VALVE BETWEEN THE CYLINDERS OPERABLE TO OPEN OR CLOSE THE INTERFLOW DUCT, PISTONS RECIPROCABLE IN THE CYLINDERS, THE PISTONS BEING IN PHASE OR NEARLY IN PHASE WITH EACH OTHER AND CAMS ON A DRIVEN CAM SHAFT CONTROLLING VALVE TIMING WHEREBY THE EXHAUST VALVE OPENS BEFORE BOTTOM DEAD CENTER OF THE POWER STROKE AND REMAINS OPEN UNTIL PART OF THE COMPRESSION STROKE HAS BEEN COMPLETED, THE ISOLATING VALVE OPENS AT A POINT CLOSE TO WHERE THE EXHAUST VALVE CLOSES AND CLOSES AT OR NEAR THE END OF THE EXHAUST STROKE, AND THE INLET VALVE OPENS AS OR SHORTLY AFTER THE ISOLATING VALVE CLOSES AND CLOSES EARLY IN THE COMPRESSION STROKE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |